:root {
  font-family: Inter, Avenir, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 24px;
  font-weight: 400;
  color-scheme: light dark;
  color: rgba(255, 255, 255, 0.87);
  background-color: #242424;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-text-size-adjust: 100%;
}

a {
  font-weight: 500;
  color: #646cff;
  text-decoration: inherit;
}
a:hover {
  color: #535bf2;
}
h1 {
  font-size: 3.2em;
  line-height: 1.1;
}

button {
  border: 1px solid transparent;
  padding: 0.6em 1.2em;
  font-size: 1em;
  font-weight: 500;
  font-family: inherit;
  background-color: #1a1a1a;
  cursor: pointer;
  transition: border-color 0.25s;
}
button:hover {
  border-color: #d4d4d4;
}
button:focus,
button:focus-visible {
  outline: 4px auto -webkit-focus-ring-color;
}

.card {
  padding: 2em;
}

@media (prefers-color-scheme: light) {
  :root {
    color: #213547;
    background-color: #ffffff;
  }
  a:hover {
    color: #747bff;
  }
  button {
    background-color: #f9f9f9;
  }
}

/*初始化input*/
input{
  width: 320px;
  color: #000000;
  background: #f5f2f2;
  padding:1px;
  height: 40px;
  border: 2px solid transparent;
  border-radius: 5px;
}
/*初始化input点击后*/
input:focus{
  border-color: #00a4ff;
  outline: none;
}
/*初始化input_placeholder*/
  input::-webkit-input-placeholder {  /* WebKit browsers*/
    padding-left: 2px;
    color: #969595;
    font-size: 14px;
  }
input:-moz-input-placeholder {   /* Mozilla Firefox 4 to 18*/
  padding-left: 2px;
  color: #969595;
  font-size: 14px;
}
input::-moz-input-placeholder {  /* Mozilla Firefox 19+*/
  padding-left: 2px;
  color: #969595;
  font-size: 14px;
}
input:-ms-input-placeholder { /* Internet Explorer 10+*/
  padding-left: 2px;
  color: #969595;
  font-size: 14px;
}
